There was also some super slow external RAM off to the side that was used as a cache for static assets.

Other things Band did:

1. Real true type fonts.

2. East Asia Language support

3. Real Unicode (see 1 & 2)

4. Antialiased fonts

5. Real transparency/alpha blending

6. Particle effects engine

30 FPS on a 96Mhz CPU and a dumb framebuffer.

Writing a custom OS lets you do amazing things with minimal resources!